PLB-D/S Programmable AC Single/Three-phase Intelligent Programmable Load Bank
Date:
21 May,2026
Share:
In the field of new energy power and industrial power supply testing, high-precision and intelligent load simulation equipment serves as core facilities to guarantee product reliability and qualified performance. Developed by Ningbo Zhimao Electronic Technology Co., Ltd., the PLB-D/S programmable AC single/three-phase intelligent programmable load bank features modular structure, precise control performance and wide compatibility. It has become the preferred equipment for power supply inspection, aging test and operating condition simulation, and is widely applied in the full-life-cycle testing of charging piles, generators, UPS, inverters and other devices.
Adopting a single/three-phase compatible design, this load bank enables flexible switching between single-phase 220V and three-phase 380V/600V operating modes, covering a power range from 10kW to 500kW. It is applicable to conventional frequencies of 47Hz-63Hz and customized 50/60Hz requirements. Its core load units adopt stainless steel alloy resistors and high-quality inductors and capacitors. Combined with optimized segmented power input technology, the minimum adjustment accuracy reaches 1W, with voltage resolution up to 0.1V and current resolution up to 0.01A, ensuring high precision and stability of load simulation. The device supports simulation of pure resistive, inductive, capacitive and mixed loads, which can accurately restore the actual load-bearing operating conditions of various power supplies.
Intelligent program control is the core advantage of the PLB-D/S series. Equipped with a 7-inch touch screen control system, it is built-in with 30 sets of programmable test procedures, and supports three load modes: constant power, constant current and constant resistance. It realizes sudden power on/off, linear ramp load and custom waveform simulation with a minimum execution interval of only 100ms and maximum 990,000 cyclic tests. It is equipped with automatic tracking energy calibration function to compensate load errors in real time and adjust load levels automatically, ensuring consistent and accurate test results. Meanwhile, it integrates RS232/485/USB/CAN communication interfaces, supporting upper computer remote control and real-time data transmission, which meets the integration demands of automatic test systems.
Comprehensive safety protection designs are adopted throughout the equipment, including over-voltage, over-current, over-power, over-temperature, short circuit and emergency stop multi-protection mechanisms. With a temperature monitoring range of 0-300℃, it can quickly cut off loads and trigger sound-light alarms under abnormal working conditions to ensure the safety of both the equipment and tested samples. The cabinet is made of high-strength cold-rolled steel plate with high-efficiency heat dissipation structure and intelligent temperature-controlled fans, maintaining stable temperature rise under full-load operation. It adapts to wide working temperatures from -10℃ to 45℃ and meets the demands of long-term continuous testing in industrial scenarios.
In practical application, the PLB-D/S programmable AC single/three-phase intelligent programmable load bank covers core testing scenarios in multiple fields. In the new energy industry, it is used for load capacity and aging tests of AC charging piles and energy storage inverters. In the power industry, it is suitable for daily maintenance and project acceptance of generators, UPS and aviation 400Hz power supplies. In industrial fields, it can complete temperature rise and service life tests of electrical switches, transformers and instrument transformers. Its multi-functional design replaces multiple traditional special load devices, greatly cutting down testing costs and equipment management complexity.
As a core product of Ningbo Zhimao Electronics, the PLB-D/S series takes precise simulation, intelligent control, high safety and wide compatibility as core competitiveness. It provides full-process load testing solutions for the R&D, production, quality inspection and operation maintenance of power electronic equipment, and boosts the high-quality development of new energy and industrial power supply industries.
More News
Mobile/WeChat
Mobile/WeChat
Mobile/WeChat
Add：Building 17, Zhixin Zhizao Valley Industrial Park, Yuexi Town, Ninghai City, Zhejiang Province, China
